code: def test_addsub_m8ndarray(self, shape):
      # GH#33296
      ts = Timestamp("2020-04-04 15:45").as_unit("ns")
      other = np.arange(6).astype("m8[h]").reshape(shape)
  
      result = ts + other
  
      ex_stamps = [ts + Timedelta(hours=n) for n in range(6)]
      expected = np.array(
          [x.asm8 for x in ex_stamps], dtype="M8[ns]"
      ).reshape(shape)
      tm.assert_numpy_array_equal(result, expected)
  
      result = other + ts
      tm.assert_numpy_array_equal(result, expected)
  
      result = ts - other
      ex_stamps = [ts - Timedelta(hours=n) for n in range(6)]
      expected = np.array(
          [x.asm8 for x in ex_stamps], dtype="M8[ns]"
      ).reshape(shape)
      tm.assert_numpy_array_equal(result, expected)
  
      msg = r"unsupported operand type\(s\) for -: 'numpy.ndarray' and 'Timestamp'"
      with pytest.raises(TypeError, match=msg):
          other - ts
  
imports: from datetime import datetime, timedelta, timezone
  from dateutil.tz import gettz
  import numpy
  import pytest
  import pytz
  from pandas._libs.tslibs import OutOfBoundsDatetime, OutOfBoundsTimedelta, Timedelta, Timestamp, offsets, to_offset
  import pandas._testing
label_desc: Use image node_id 15 for calling the TestTimestampArithmetic obj's underlying member method code with example usage: obj.test_addsub_m8ndarray(shape) without return types